中国矿业
中國礦業
중국광업
CHINA MINING MAGAZINE
2015年
8期
138-140,156
,共4页
泄爆口参数%影响%数值分析
洩爆口參數%影響%數值分析
설폭구삼수%영향%수치분석
explosion venting parameters%influence%numerical analysis
本文基于流体力学软件Fluent ，通过模拟9．5％的甲烷‐空气混合气体在柱形容器内的燃爆与泄爆过程，分析了不同泄爆口位置以及不同泄爆口数量等因素对泄爆过程的影响。结果表明：泄爆过程中普遍存在二次压力峰值现象，泄爆口越远离点火位置，二次压力峰值到达时间越长，峰值压力持续时间越长，压力泄放越慢；等截面积条件下，增加泄爆口数量能在一定程度上加快容器内的压力泄放。
本文基于流體力學軟件Fluent ，通過模擬9．5％的甲烷‐空氣混閤氣體在柱形容器內的燃爆與洩爆過程，分析瞭不同洩爆口位置以及不同洩爆口數量等因素對洩爆過程的影響。結果錶明：洩爆過程中普遍存在二次壓力峰值現象，洩爆口越遠離點火位置，二次壓力峰值到達時間越長，峰值壓力持續時間越長，壓力洩放越慢；等截麵積條件下，增加洩爆口數量能在一定程度上加快容器內的壓力洩放。
본문기우류체역학연건Fluent ，통과모의9．5％적갑완‐공기혼합기체재주형용기내적연폭여설폭과정，분석료불동설폭구위치이급불동설폭구수량등인소대설폭과정적영향。결과표명：설폭과정중보편존재이차압력봉치현상，설폭구월원리점화위치，이차압력봉치도체시간월장，봉치압력지속시간월장，압력설방월만；등절면적조건하，증가설폭구수량능재일정정도상가쾌용기내적압력설방。
Based on FLUENT‐the fluid dynamics software ,a simulated experiment about the explosion and explosion venting of 9 .5 Ch4‐air mixture in a cylindrical container is set to analyze the influence of different locations and numbers of venting ports to the pressure decreasing of the container during the venting progress .The results show that :the “two pressure peaks” phenomenon is common in the venting progress .The further the vent is away from the ignition position ,the longer of the arrival time of the twice pressure peak and the last time of the peak and thus the slower of the pressure venting progress . Additionally ,at the condition of equal venting square ,the increasing of the number of vents can be helpful for the pressure venting progress to a certain extent .
